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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 18 — Sep. 15, 2009
  • pp: 2784–2786

Coherent control of ultrafast shift currents in GaAs with chirped optical pulses

Ana Maria Racu, Shekhar Priyadarshi, Markus Leidinger, Uwe Siegner, and Mark Bieler  »View Author Affiliations


Optics Letters, Vol. 34, Issue 18, pp. 2784-2786 (2009)
http://dx.doi.org/10.1364/OL.34.002784


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Abstract

We demonstrate the coherent control of ultrafast shift currents in GaAs with two orthogonally polarized linearly chirped laser pulses. By varying the chirp and phase delay between the pulses, we achieve the control of the shape of the shift current transients in a wide range from a monopolar shape to different bipolar shapes (alternating currents). Moreover, the terahertz emission patterns resulting from the ultrafast shift currents allow one to determine the sign of the chirp of the laser pulses.

© 2009 Optical Society of America

OCIS Codes
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Ultrafast Optics

History
Original Manuscript: June 11, 2009
Manuscript Accepted: July 6, 2009
Published: September 9, 2009

Citation
Ana Maria Racu, Shekhar Priyadarshi, Markus Leidinger, Uwe Siegner, and Mark Bieler, "Coherent control of ultrafast shift currents in GaAs with chirped optical pulses," Opt. Lett. 34, 2784-2786 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-18-2784


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References

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